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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 6 - Newton's Laws of Motion (With Friction) and Dynamics of Circular Motion > A coin is placed at the edge of a horizontal disc rotating about a vertical axis through its axis through speed 2rads^−1. The radius of the disc is 50 cm. Find the minimum coefficient of friction between disc and coin so that the coin does not slip (g = 10ms^−2 ).

A coin is placed at the edge of a horizontal disc rotating about a vertical axis through its axis through speed 2rads^−1. The radius of the disc is 50 cm. Find the minimum coefficient of friction between disc and coin so that the coin does not slip (g = 10ms^−2 ).

A block of mass m if coefficient of friction between the block and the surface is inclined at an angle θ to the vertical. The block will remain in equilibrium lying on a rough horizontal plane is acted upon by a horizontal force P and another force Q